Finding the Fourth Proportional to 91,191.99, 125,841.65 and 57,218.79
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Solution
The fourth proportional to 91,191.99, 125,841.65 and 57,218.79 is: 78,959.86
Step by Step Solution
- Step 1: Write the proportion equation
91,191.99 : 125,841.65 = 57,218.79 : x - Step 2: Convert to fraction form
91,191.99/125,841.65 = 57,218.79/x - Step 3: Cross multiply
91,191.99x = 125,841.65 × 57,218.79 - Step 4: Simplify right side
91,191.99x = 7,200,506,658.51 - Step 5: Solve for x
x = 7,200,506,658.51/91,191.99 - Step 6: Final answer
x = 78,959.86
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.